Qualcomm to Buy Atheros for $3.1 Billion

Qualcomm Inc. agreed to buy Wi-Fi chip maker Atheros Communications Inc. for $3.1 billion in cash as it aims to address growing demand for devices that use Wi-Fi to connect to the Internet.

The deal—Qualcomm's largest acquisition to date—fills a hole in the company's communication-chip offerings. The importance of Wi-Fi has been growing as more devices—including smartphones, tablets and notebooks—connect to the Internet.